Binding, unbinding and aggregation of crescent-shaped nanoparticles on nanoscale tubular membranes
| العنوان: | Binding, unbinding and aggregation of crescent-shaped nanoparticles on nanoscale tubular membranes |
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| المؤلفون: | Mohamed Laradji, Eric J. Spangler, P. B. Sunil Kumar, Alexander D. Olinger |
| المصدر: | Soft Matter. 17:1016-1027 |
| بيانات النشر: | Royal Society of Chemistry (RSC), 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Materials science, education, Binding energy, Nanoparticle, 02 engineering and technology, General Chemistry, 010402 general chemistry, 021001 nanoscience & nanotechnology, Condensed Matter Physics, Curvature, 01 natural sciences, 0104 chemical sciences, Solvent, Molecular dynamics, Tubule, Membrane, Biophysics, 0210 nano-technology, Nanoscopic scale |
| الوصف: | Using molecular dynamics simulations of a coarse-grained implicit solvent model, we investigate the binding of crescent-shaped nanoparticles (NPs) on tubular lipid membranes. The NPs adhere to the membrane through their concave side. We found that the binding/unbinding transition is first-order, with the threshold binding energy being higher than the unbinding threshold, and the energy barrier between the bound and unbound states at the transition that increases with increasing the NP's arclength Lnp or curvature mismatch μ = Rc/Rnp, where Rc and Rnp are the radii of curvature of the tubular membrane and the NP, respectively. Furthermore, we found that the threshold binding energy increases with increasing either Lnp or μ. NPs with curvature larger than that of the tubule (μ > 1) lie perpendicularly to the tubule's axis. However, for μ smaller than a specific arclength-dependent mismatch μ*, the NPs are tilted with respect to the tubule's axis, with the tilt angle that increases with decreasing μ. We also investigated the self-assembly of the NPs on the tubule at relatively weak adhesion strength and found that for μ > 1 and high values of Lnp, the NPs self-assemble into linear chains, and lie side-by-side. For μ < μ* and high Lnp, the NPs also self-assemble into chains, while being tilted with respect to the tubule's axis. |
| تدمد: | 1744-6848 1744-683X |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a0854e3c8cbdd898faf1ddc5720cc506 https://doi.org/10.1039/d0sm01642j |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi.dedup.....a0854e3c8cbdd898faf1ddc5720cc506 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 17446848 1744683X |
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